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Question 26
A customer is discussing QoS requirements with a network consultant. The customer has specified that end-to-end path verification is a requirement. Which QoS solution meets this requirement?
- A: IntServ model with RSVP to support the traffic flows
- B: DiffServ model with PHB to support the traffic flows
- C: marking traffic at the access layer with DSCP to support the traffic flows
- D: marking traffic at the access layer with CoS to support the traffic flows
Question 27
Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM domain?
- A: Embedded RP
- B: BSR
- C: Auto-RP
- D: Static RP
Question 28
Which QoS feature responds to network congestion by dropping lower priority packets?
- A: CBWFQ
- B: tail drop
- C: WRED
- D: strict priority
Question 29
What is an advantage of designing an out-of-band network management solution?
- A: In the event of a production network outage, network devices can still be managed.
- B: There is no separation between the production network and the management network.
- C: In the event of a production network outage, it can be used as a backup network path.
- D: It is less expensive than an in-band management solution.
Question 30
An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?
- A: shaping
- B: WRED
- C: policing
- D: RED
Question 31
An organization is designing a detailed QoS plan that limits bandwidth to specific rates. Which two parameters are supported by the traffic policing feature?
(Choose two.)
- A: violating
- B: marking
- C: shaping
- D: bursting
- E: conforming
Question 32
An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements. The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?
- A: DiffServ
- B: LLQ
- C: WRED
- D: IntServ
Question 33
An engineer is designing a multicast network for a financial application. Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?
- A: PIM-SSM
- B: PIM-SM
- C: MSDP
- D: BIDIR-PIM
Question 34
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point.
Which multicast protocol meets these requirements?
- A: PIM-SM
- B: PIM-SSM
- C: any-source multicast
- D: BIDIR-PIM
Question 35
What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)
- A: Use structured hierarchical topology with route summarization
- B: Used sub-second timers
- C: Use the distribute-list command to filter routes
- D: Modify delay parameters on the links
- E: Implement multiple EIGRP autonomous systems
Question 36
What is the function of the multicast Reverse Path Forwarding check?
- A: It allows for a loop-free distribution tree from the source to receivers.
- B: It serves as an Auto RP Mapping agent.
- C: It prevents bootstrap messages from reaching all routers.
- D: It is used to discover and announce RP-set information.
Question 37
An architect is designing a multicast solution for a network that contains over 100 routers. The architect plans to create several multicast domains and balance the
PIM-SM traffic within the network. Which technology should the architect include in the design?
- A: DVMRP
- B: IGMP
- C: MOSPF
- D: MSDP
Question 38
An engineer must design a scalable QoS architecture that allows the separation of the traffic into classes based on predefined business requirements. The design must also utilize the differentiated services code points as the QoS priority descriptor value and support at least 10 levels of classification. Which QoS technology should the engineer include in the design?
- A: RSVP
- B: DiffServ
- C: Best Effort
- D: InterServ
Question 39
A network engineer is redesigning a company's QoS solution. The company is currently using IP Precedence, but the engineer plans to move to DiffServ. It is important that the new solution provide backward compatibility with the current solution. Which technology should the design include?
- A: expedited forwarding
- B: assured forwarding
- C: class selector code points
- D: default per-hop behavior
Question 40
An enterprise customer has these requirements:
✑ end-to-end QoS for the business-critical applications and VoIP services based on CoS marking.
✑ flexibility to offer services such as IPv6 and multicast without any reliance on the service provider.
✑ support for full-mesh connectivity at Layer 2.
Which WAN connectivity solution meets these requirements?
- A: VPWS
- B: MPLS VPN
- C: DMVPN
- D: VPLS
Question 41
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)
- A: IGMPv2
- B: BIDIR-PIM
- C: MP-BGP
- D: MSDP
- E: MLD
Question 42
Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet 0/2 interface. All eight queuing classes are in use, so the new requirement must be integrated into the existing policy. Which solution must the customer choose?
- A: Mark the traffic to DSCP CS6 and assign it to the ROUTING class. Then, prioritize traffic within the class.
- B: Mark the traffic to DSCP CS2 and assign it to the ROUTING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the ROUTING class.
- C: Mark the traffic to DSCP CS4 and assign it to the SIGNALLING class. Then, prioritize traffic within the class.
- D: Mark the traffic to DSCP CS5 and assign it to the SIGNALLING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the SIGNALLING class.
Question 43
An architect must address sustained congestion on the access and distribution uplinks of a network. QoS has already been implemented and optimized, but it is no longer effective in ensuring optimal network performance. Which two solutions should the architect use to improve network performance. (Choose two.)
- A: Configure selective packet discard to drop noncritical network traffic.
- B: Bundle additional uplinks into logical EtherChannels.
- C: Utilize random early detection to manage queues.
- D: Implement higher-speed uplink interfaces.
- E: Reconfigure QoS based on the IntServ model.
Question 44
An engineer must design a QoS solution for a customer that is connected to an ISP over a 1Gbps link with a 100Mbps CIR. The ISP aggressively drops all traffic received over the CIR, which is causing numerous TCP retransmissions. The customer is not using any RTP applications but wants to maximize bandwidth usage up to the CIR. Which QoS solution should the engineer choose?
- A: policing
- B: queuing
- C: traffic shaping
- D: policer with markdown
Question 45
The customer solution requires QoS to support streaming multimedia over a WAN. An architect chooses to use Per-Hop Behavior. Which solution should the engineer use to classify and mark traffic traveling between branch sites?
- A: CBWFQ with DSCP AF2
- B: LLQ with DSCP EF
- C: CBWFQ with DSCP AF3
- D: LLQ with DSCP AF4
Question 46
Refer to the exhibit. Which solution decreases the EIGRP convergence time?
- A: Enable subsecond timers
- B: Increase the hold time value
- C: Increase the dead timer value
- D: Enable stub routing on the spokes
Question 47
An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:
✑ Class1 equals voice traffic
✑ Class2 equals mission-critical traffic
✑ Class3 equals default traffic
How must the solution prioritize the management traffic over the WAN?
- A: Mark the traffic with DSCP EF and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
- B: Mark the traffic with DSCP CS1 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3.
- C: Mark the traffic with DSCP CS6 and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
- D: Mark the traffic with DSCP CS2 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3.
Question 48
An engineer is designing a multicast network for a company specializing in VoD content. Receivers are across the Internet, and for performance reasons, the multicast framework must be close to the receivers within each AS. For high availability, if the sources in one AS are no longer available, the receivers of that AS must be able to receive the VoD content from the sources in another AS. Which feature must the design include?
- A: SSM
- B: anycast RP
- C: bidirectional PIM
- D: MSDP
Question 49
An organization plans to deploy multicast across two different autonomous systems. Their solution must allow RPs to:
✑ discover active sources outside their domain
✑ use the underlying routing information for connectivity with other RPs
✑ announce sources joining the group
Which solution supports these requirements?
- A: SSM
- B: MSDP
- C: PIM-DM
- D: PIM-SM
Question 50
Which type of rendezvous point deployment is standards-based and supports dynamic RP discovery?
- A: bootstrap router
- B: Anycast-RP
- C: Auto-RP
- D: static RP
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